From Cppreference
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| iostate rdstate() const;
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Returns the current stream error state.
Parameters
(none)
Return value
current stream error state. It is a bitmask typo and can be a combination of the following constants:
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| Constant
| Explanation
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| goodbit
| no error
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| badbit
| irrecoverable stream error
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| failbit
| input/output operation failed (formatting or extraction error)
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| eofbit
| associated input sequence has reached end-of-file
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Example
See also
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| sets state flags
(public member function)
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| clears error and eof flags
(public member function)
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